- Site Tools
- Net info
- Please note new updated net time.The CAARC October General Meeting will be held on Wednesday October 21st. at 7.30PM We will meet at the new Red Deer County Search and Rescue building located at 249 Clearview Drive east of the Westerner Park. Go south of 19th Street on 40th Ave . Turn left on Clearview Drive and follow it to the east around the corner south to the County Search and Rescue Building on the east side.
- FAQ/Swap and Shop
- Members D/L
- 45th Annual Picnic
Remote tuners are offered by MFJ, LDG and others. Here is my brief review of the LDG RT-100 tuner.
I purchased the tuner new, at what I considered was a competitive price. As you can see from the photo I am using it to tune a horizontal loop antenna close to the feed-point. The tuner is matching a short section of low loss open wire line and not a long section of coax. The tuner requires 12V DC at low current so I powered it from a gel cell battery and a small solar trickle charger panel (CND$14). This remote solar power arrangement has been in operation for several months now without issue.
The tuner finds a match from 80 – 10 meters on the random length loop (~130m of #10 multi-strand insulated wire, 10m high).
I have found a few issues with tuning; i.e. failing to find a good match on a band or frequency. As per the instruction manual a tune can be “forced” by changing bands, re-tuning and then returning to the frequency you want to operate on.
The second issue noted is a de-tune with changing weather / moisture conditions. For example rain or heavy dew on the antenna may cause the antenna to re-tune. This does not often happen but it is inconvenient there is a re-tune cycle in the middle of a QSO.
I experimented with different baluns and found that a 4:1 air core balun worked best for me. This balun is very easy and inexpensive to make using parts from the hardware store. The antenna is maintained at DC ground through the balun and tuner. (Yes, the ground wire should have been green…major fail !)
Using the remote tuner I was able to operate on SSB effectively on multiple bands with a single wire antenna using only 100 W. The loop antenna was found to be very quiet as a receive antenna. On 20m a signal barely audible on a dipole was perfectly Q5 on the loop antenna.
So if your opportunities for erecting antennas are restricted my experience shows that a multi band wire antenna with a remote tuner and one feedline can be an effective way to operate HF.
The CAARC October General Meeting will be held on Wednesday October 21st. at 7.30PM We will meet at the new Red Deer County Search and Rescue building located at 249 Clearview Drive east of the Westerner Park. Go south of 19th Street on 40th Ave . Turn left on Clearview Drive and follow it to the east around the corner south to the County Search and Rescue Building on the east side.
This year’s Rocky Mountain Rally (RMR) will be hosted in Invermere BC on Saturday October 31st and Sunday November 1st.
Radio operator support of the car rallies is critical for the safety of the event. Earlier this year at the Radium car rally there was a crash and a car caught fire. The quick thinking of Net Control and effective communications with involved radio operators swiftly reduced the threat of fire spreading to the surrounding forest. Both driver and navigator were unharmed because of the rally car’s safety features.
This year’s RMR will be a big event. Approximately 26 radio operators will be needed. If you can come out and help please register here.
The CSCC will be providing:
- Free shared accommodation at Copper Point Resort for the Friday October 30th and Saturday October 31st.
- Lunch and possibly a volunteer recognition event on Saturday October 31st.
With the approval of the AGLC, CARA will be providing a fuel and meal subsidy for each day you participate in the event. CARA is applying for a $50 per day gas subsidy and $15 per day meal subsidy.
More details around volunteer assignments, accommodation’s, events and subsidies will be posted here as they become available.
Thanks for your support,
Calgary Amateur Radio Association
Don’t you hate when disaster strikes?
Tomorrow morning, Saturday October 3, 2015 at 10:00am a tornado will hit Stettler Alberta with a devastating force. The town of 3800 will be in a state of emergency and the toll switch being damaged by the storm, disconnected the town from the outside world. No cell, no internet, no long distance phones. The trailer court population of 500 being damaged the most, are in need of transport, triage and care facility that can only be provided by CFB Cold Lake. (shut up, it’s my scenario) (It is almost a half hour drive from Stettler to Cold Lake tomorrow.)
There is a large facility that can house injured people. There is a large population of first aid trained personnel at the base (all of them) and hospital personnel are being shuttled back and forth, along with casualties, as the hospital is so overwhelmed they welcome any and all assistance. Critically ill at the hospital, walking wounded at the base. GO FROM THERE GUYS…
This is a do it where you are SET, so no travel to real locations is required. Only if you need to get to a set up HF station or if your local EC wishes to engage a club station, EOC or etc. Please work that out locally amoungst yourselves if not prearranged.
Thank heaven for amateur radio to the rescue. I would like to wind it down by 13:00.
The usual (there is nothing usual about a disaster) HF frequencies of 3.675, 7.135, 14.135, 18.135, 21.235, and 29.235MHz SSB and 3.596, 7.096, 14.096, 18.096, 21.096 and 28.096MHz digital are available. Lets try to settle on 14.096 for digital and 14.135 voice, if it will work. We may need to move, but I doubt if 80M will work that time of day.
I have taken the liberty to assume we are welcome to use the Discovery Reflector on 9010 for IRLP. Please try to connect there if we have no radio path otherwise.
You can try to echolink in to VE6QE-R if all else fails and see what happens.
I have VERY limited experience with WINLINK but will try to be running VE6CIA on there, so we can try that also. I again an assuming I can be on 14.096 and be available to be connected to. If I am out to lunch on that (all suggestions are welcome) please advise and I will adjust accordingly. Emails should be able to come via that method to firstname.lastname@example.org. Those more savvy in that, (probably all of you) let me know how out to lunch I am.
We will have the SARA system, the CAARC system, including the VE6YXR ARES UHF systems linked, so get on there if possible.
They will all also be connected to the IRLP reflector so please don’t double connect anything on us or we will have another disaster.
for information on locations and frequencies available.
Let me know what you think and hope to see you tomorrow. (hear that is) I know I will have forgotten something so please advise gently.
Thanks all who can and will participate…Garry VE6CIA RAC Alberta SM
Modification to add a digital display and continuous frequency selection to VHF/UHF Maxtrac transceivers.
Avinoam Albo, 4X1HF Avinoam.email@example.com
Conversion of a Maxtrac to a transceiver with display and frequency selection
In this article I will explain how to convert the venerable Maxtrac to a rig more user friendly to radio amateurs. The modification requires the addition of only a few inexpensive and easily available components. When the modification is completed you will have a rig with digital display and frequency selection enabling continuous coverage over the whole range of frequencies where the VCO locks. An external programmer is no longer needed.
Disclaimer: Carrying out the modification described requires basic electronics skills. Any modifications are the sole responsibility of the technician. This modification will likely void type certification for commercial radio service. This article does not make any specific claims or recommendations.
Specifications of the transceiver after this modification
- Digital display
- Continuous frequency selection
- Selection of transmitter output power (2 levels or more)
- Selection using VFO or memories
- Selection of VFO frequency steps (5K, 10K, etc.)
- Receive PL (on/off)
- Scanning and saving frequencies to memory (future)
- Maxtrac VHF or UHF
- Arduino Nano 328 controller
- Rotary encoder
- LCD 08 X 02 (8 characters x 2 lines)
- 3K, 4.7K, 8.2K, 10K resistors
- Fine gauge insulated hookup wire such as wire wrap wire
Programming the transceiver More >
Horizontal Quad Antenna
By: Eli Kovo, 4X4LH (originally published in the IARC newsletter 08/2015 “HaGal” and used with permission of the author. Translated by: Earl, VA6TJ)
I recently came across an article in an issue of “73 Magazine” from 1978 raving about an antenna called “The German Quad” which [at that time] was used by about half the hams in Germany. Below I summarize the main points of the article.
The first thing about this antenna is that it works without a tuner on 6 bands, from 10m to 80m and also on 2m. I could not find confirmation that it works on 6m however I am confident that it will also transmit on that band. Compared to a symmetrical dipole, the horizontal quad has the advantage that it can be fed anywhere, even at a point close to the shack as in illustration 1.
I need volunteers to sign up for this year’s bike tour, August 29/30. Attached is the sign up sheet that shows the hours and a volunteer information sheet so you know what is expected of you. I don’t have any extra radios to loan out so if you don’t have the equipment needed please source that out yourself.
SARA Flea Market
Sponsored by the Southern Alberta Repeater Association
Date: October 10, 2015
Place: Calgary, AB
Directions: Eastside City Church, 1320 Abbeydale Drive SE, Calgary, AB T2A 7L8
411 Map: http://411.ca/business/map/6005347
Google Map: https://firstname.lastname@example.org,-113.9304438,17z
Description: Free Parking; Free Coffee; Snack Bar with Famous SARA Dogs; Commercial Dealers.
Time: Vendors 10:00 am; Public 11:00 am
Cost: Vendors & Public $5; Tables $10 each
Information: For more information or to reserve tables, call Ken Oelke, VE6AFO at 403-226-5840 or email@example.com